Tagged Questions

I scanned slides and I have now 48 bit color and IR (infrared) 16 bit gray files. Now I am processing them to remove dust and scratches and I am looking for a way to batch-detect the correct threshold ...

I have read several questions here regarding dust in a camera lens: should I be worried about getting dust, will it affect the image, and is it a problem. One answer suggested that "zoom lenses are ...

I’m planning on purchasing the Canon EOS Rebel T5/1200D very soon. It’s the only DSLR that fits my budget (other one is the Nikon D3100 which I don't plan to get).
I like everything about the camera ...

I am kinda torn between buying a Sigma 18-35mm f1.8, Nikkor 17-55 f2.8 and Sigma 17-50 f2.8 for my D3100 and D7100 cameras. The reason for confusion is that the Nikkor one has a weather sealing ring ...

I've a D5100 for around a year with 18-55mm kit lens and recently bought a 55-200mm lens. For around 1 month I saw a starry shape in the front glass of the lens. After searching on Google I came to ...

After shooting for about a month with my new D7100 I discovered some dust in the viewfinder / focusing screen or the prism area.
The dust is not visible in the images and it does not have any effect ...

I have a few hundred scanned slides that are about 30 yrs old and contain quiet a lot of dust/scratches.
I'd like to use a filter to automate removal of most dust/scratches as I cannot realistically ...

Sometimes shooting a long exposure results in hot pixels and some times dust on lens becomes apparent if shooting with very small aperture.
Despite having all good qualities the photo looks ugly due ...

The Nikon DK-21 rubber eyecup just collects so much dust and I have to wash it regularly to keep it clean.
Any suggestions on how to keep this clean in the camera bag and when handling the camera? or ...

Trying to figure out a way to bring my new Canon S100 to Burning Man, but worried it won't stand up to the harsh dust of the desert like a sturdier SLR would. Has anyone tried one of these waterproof ...

I borrowed a Coolscan V ED (LS-50 ED) scanner and scanned some old negatives as .NEF files. However, I didn't turn on all the Scan Image Enhancer / Digital ICE features, so a lot of them have quite a ...

My cheap point-and-shoot digital camera (BenQ DC C1035) has served me well for a year and a half but recently seems to have let some dust inside which results in smudges or blobs on every shot.
Since ...

I have seen this in my D700 menu and just saw it again on Nikon's tech sheet for the new D4. Is this the same tech that Minolta is using to clean their sensor of dust or is it something else? How does ...

I have a really nasty looking piece of dust on my 550D's sensor, situated in the top right-hand corner of each image I take with anything higher than f/11. I am going to get a decent sensor cleaning ...

I am pretty sure I have dust inside of my Sony a55 SLT (Single Lens Translucent). However I'm not sure how to get rid of it or where exactly it is. I think it could be either on the translucent mirror ...

I did a 30 second long shot without the lens and checked the sensor and saw some dust on my sensor (even though camera has sensor cleaning). I didn't see any defects on photos yet, but is it something ...

I'm the owner of a new Canon 550D with a Canon 18-135mm IS lens.
While looking into the lens, I noticed what I think are two tiny dust particles (I would say smaller than 1mm) behind the first glass ...

Here and there I read of people who set their lens to a small aperture while testing their sensor cleanness, supposedly to get the best image of dust speckles. However, the image of the on-sensor dust ...

Few years ago, Canon introduced some sort of internal sensor cleaning system that (as far as I understand it) shakes the sensor off any dust it collected during use. This shake is very high frequency.
...

I have been trying to shoot partial solar eclipse today with my Nikon D3100, and later noticed this spot on images:
http://pix.academ.org/img/2011/01/04/70baea815d1557594f096a82ab05704f.png
I do not ...

With the advent of sensor cleaning in newer bodies - does it matter which way up you hold the camera whilst it is cleaning? I understand that the sensor cleaning works by vibrating the sensor to knock ...

I recently went to Silverstone to watch the F1 qualifying and took my DSLR camera with me. Throughout the day, I switched lenses a few times, but each time was very conscious that there was a lot of ...